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Membrane concentration process for pulullan

A pullulan polysaccharide and membrane concentration technology, which is applied in the field of pullulan polysaccharide membrane concentration process, can solve the problems of difficult to guarantee product quality, high energy consumption for thermal concentration, large loss of sugar components, etc. The effect of improving the yield of resources and products

Inactive Publication Date: 2021-10-22
HEFEI XINDA MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional process uses plate and frame filtration or activated carbon filtration to remove impurities, or uses thermal concentration to increase the concentration of the solution, but plate and frame filtration and activated carbon filtration are not sufficient for the removal of impurities such as protein, ash, monosaccharides, and disaccharides , the product quality is difficult to guarantee, and the loss of pullulan polysaccharide is large; the energy consumption of thermal concentration is high, and the high temperature will denature the protein and reduce the product quality

Method used

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  • Membrane concentration process for pulullan
  • Membrane concentration process for pulullan
  • Membrane concentration process for pulullan

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The present invention provides a technical solution: a conventional condensed process, which includes the following steps:

[0029] S1, pretreatment: Import the fermentation liquid containing Procolate and more impurities into a pretreatment tank, high temperature resection;

[0030] S2, clarified: add an appropriate amount of filter fillers to the fermentation broth, introduced into the plate frame filter press to extract the clear liquid;

[0031] S3, decolorization: Import the clarified liquid into the tank to decolorize;

[0032] S4, removal of protein: Import the decolorized clear liquid into the treatment tank, remove the impurity protein by resin adsorption method to obtain a treatment liquid;

[0033] S5, ultrafiltration processing: Import the processing liquid into the ultrafiltration membrane system, circulating filtration, can remove 60-90% protein, 99% monosaccharide and disaccharide, ash, etc. by ultrafiltration concentration. purity;

[0034] S6, drying: The u...

Embodiment 2

[0044] The difference from the embodiment is that the high temperature interferase treatment temperature in the step S1 is 80 ° C, the treatment time is 1.5 h;

[0045] The quality of the filtration in the step S2 is 2% of the total mass of the fermentation broth;

[0046] The mass of the activated carbon accounts for 0.5% of the total mass of the clear liquid, and the decolorization treatment temperature is 50 ° C, the stirring treatment time is 60 min;

[0047] The step S3 also includes a hydrogen peroxide treatment after activated carbon, and includes the step of adding a hydrogen peroxide solution to a solution of the activated carbon and a hydrogen peroxide solution, from 0.3% of the total mass of the solution;

[0048] The ultrafiltration process in the step S5 employs a roll ultrafiltration membrane having a molecular weight of 5,000 Daltons, a super filtered treatment pressure of 7 bar, a temperature of 25 ° C;

[0049] The cyclic filtration in the step S5 includes the ste...

Embodiment 3

[0051] The difference from the embodiment is that the high-temperature resembutment treatment temperature in the step S1 is 90 ° C, and the treatment time is 1 h;

[0052] The quality of the filtration in the step S2 accounts for 3% of the total mass of the fermentation broth;

[0053] The quality of the activated carbon accounts for 1% of the total mass of the clear liquid, the decolorization treatment temperature is 80 ° C, and the stirring treatment time is 20 min;

[0054] The step S3 also includes a hydrogen peroxide treatment after active carbon, and includes a hydrogen peroxide solution, and the mass of the hydrogen peroxide solution comprises 0.5% by mass of the hydrogen peroxide solution in a solution treated with activated carbon.

[0055] The ultrafiltration process in the step S5 employs a roll ultrafiltration membrane having a molecular weight of 100,000 Daltons, an ultrafiltration pressure of 10bar, and a temperature of 40 ° C;

[0056] The cyclic filtration in the st...

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Abstract

The invention belongs to the technical field of pulullan production, and particularly discloses a membrane concentration process for pulullan. The membrane concentration process specifically comprises the following steps: S1, pretreatment: introducing fermentation liquor containing pulullan and more impurities into a pretreatment tank, and performing high-temperature enzyme deactivation treatment; S2, clarification: adding a proper amount of a filter aid into the fermentation liquor, and guiding the fermentation liquor into a plate-and-frame filter press for filter pressing to obtain clarified liquor; S3, decoloration: guiding the clarified liquid into a decoloration tank for decoloration treatment; S4, protein removal: guiding the decolorized clear liquid into a treatment tank, and removing impurity protein by adopting a resin adsorption method to obtain a treatment liquid; S5, ultrafiltration treatment: guiding the treated liquid into an ultrafiltration membrane system, and performing circulating filtration; and S6, drying: collecting an ultrafiltration membrane concentrated solution obtained through treatment in the step S5, and performing spray drying to obtain a powdery finished product. According to the method, impurities in the fermentation liquor can be fully removed, product purity is high, a technological process is simple, energy consumption is low, and production cost is low.

Description

Technical field [0001] The present invention relates to the field of Procolate production techniques, and is specifically a conventional condensed process. Background technique [0002] Procolate is an extracellular water-soluble viscous polysaccharide that is fermented by corn as raw materials, and a short infarctorous polysaccharide, a vermicon sugar, and English name PULULLAN. Due to the unique structure and nature of the polysaccharide, it has a wide range of application prospects in pharmaceutical, food, oil, chemical and other industries. Because it can be degraded by microbial degradation in nature, it will not cause environmental pollution, so it is known as pollution-free plastics. May 19, 2006. The Ministry of Health issued Announcement No. 8, a Puturan Sugar for the new four food additive products, can be enjoyed in candy, chocolate coating, diaphragm, composite seasoning and fruit and vegetable juice drink It is used as a film and thickener. The use of microbial ferme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/02
CPCC08B37/0003C08B37/0018
Inventor 陈传云张庆李胜明梁远争
Owner HEFEI XINDA MEMBRANE TECH
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